Perforating or scoring device for printing-presses.



PA'IBNTED APR. 30, 1907. C. E. BURGH. v PERI'ORATING 0R SCORING DEVICE POR PRINTING PRESSES.

APPLICATION FILED JAN. 22| 19.07'.

CHARLES E. BURCI-I, OF MINNEI'XPOLIS. MINNESOTA.

PERFORATING OR SCORING DEVICE FOR PRINTING-PRESSES.

Ifo. 852,315.

Specification of Letters Patent.

Patented April 30, 1907.

Application lecl January 22,1907. Serial No. 353,551.

Be it known that I, Cn'iinLEs E: Benen, of Minneapolis, Hennepin county, Minnesota, have invented certain new and useful Iniprovements in Ferforating or Scoring Uevices for Printing-Presses, of which the following is a speciiieation.

The invention consists generally in a rocking bar having a perforating` or scoring edge and a spirally formed portion and means engaging said spirally formed portion for imparting a rocking movement to said bar.

The obj eet I have in view is to provide improved means for operating the rocking bar which is provided with teeth to engage the paper and perforate or score it.

The invention consists generally in a rocking bar having a spiral at one end, a lever engaging said spiral and a plunger device by means of which said lever is operated to rock said bar.

In the accompanying drawings, forming part of this specification, Figure 1 is a side view of a perforating or scoring device embodying my invention. Fig. 2 is a top view of the same. Fig. 3 is a side view partially in section illustrating the mechanism for operating the bar. Fig. 4 is an end view of the device. Fig. 5 is a transverse sectional view showing the shape of the rocking bar and its normal inoperative position. Fig. 6 illustrates the bar in its operative position.

In the drawing, 2 represents the base ofthe perforating or scoring device having a longitudinal recess 3 in its upper edge adapted to receive a bar 4 having a rounded lower edge 5 ind beveled sides 6 which merge into a series )f perforating or scoring teeth 7. At one end )f the device the bar 4 has a pin S that is jourialed in the upper end of a plate 9 that is sc- :ured to the end of the base. At the other and the bar is provided with a spiral 10 ourialed in a post 12 which I prefer to form inlependently of the base 2, but secure it thereo by means of pins 13 and 14 passing through langes 15 and 16 provided respectively on he post 12 and the end of the base. A ocket 17 is formed in said post wherein a lunger 18 is vertically slidable, being noraally held in its raised position by a spring 9. A lip 20 is provided on the lower end of he plunger. A lever 21 is mounted on a ivot pin 22 in a recess 23 between the post 2 and the end of the base and said lever has notch 24 to receive the lip on said plunger. he upper end of the lever is forked, as indil l l cated in Fig. 2, to straddle the spirals 10, and consequently when pressure is applied to the plunger the lever will be oscillated and through its engagement with the spiral will rock the toothed bar to its operative position` As soonas the plunger is relieved its spring will return it to its normal position, swing the lever' 21 in the opposite direction and rock the bar to a position where its teeth will be out of the path of the ink rolls. The plunger may be operated by any moving part of the press and as the operating device 'forms no portion of my present invention I have not thought it necessary to illustrate the same or to indicate in detail the precise manner of mounting the attachment on a press.

It will be noted that the rocking bar operates freely and positively and has a substantial bearing throughout its entire length, and is thereby prevented from getting out of alinement or becoming crooked or uneven. I have shown the bar provided with teeth for perforating purposes but it may have a plain blade to adapt it particularly for scoring or cutting.

I claim as my invention:

1. The combination, with a scoring or perforating device for printing presses, with a suitable base, a rocking bar mounted thereon and having' a spiral formed thereon, and mechanism for operating said spiral to rock said bar, subst-initially as described.

2. The combination, in a scoring or perforating device for printing presses, with a suitable base, a rocking bar mounted thereon and having a spiral formed thereon and provided with a perforating or scoring edge, a plunger, and operative connections provided between said plunger and spiral, whereby Said bar will be :rocked when said plunger is operated.

3. The combination, with a base, of. a rocking bar mounted thereon and having a perforating or scoring edge, and a spiral at one end, a lever having a forked end to engage said spiral, and means for oscillating said lever to rock said bar.

4, The combination, with a base, of a rocking bar mounted thereon and having a perforating or scoring edge, and a spiral at one end, a pivoted lever having a fork to engage said spiral and a notch or recess, a plunger having a lip to enter said notch, and a spring for yieldingly holding said plunger and lever in their normal position.

TOO

5. The combination, with a base having a recess in one edge, of a rocking bar fitting within said recess and having an edge provided with a series of teeth and a spiral at one end, a post secured to the end of said base and having a bearing for said spiral, a plunger iitting within a socket in said post at right angles substantially to said spiral, a spring normally holding said plunger in its raised position, said plunger having a lip at its lower end, a lever pivoted at a point intermediate to its ends within a recess formed between said post and the end of said base, one end of said lever having a notch to receive the lip on said plunger and the other end being forked to straddle said spiral whereby when said plunger is reciprocate'd said lever will be oscillated and said bar rocked.

6. The combination, with a base having a recess in its'edge, said recess being curved in cross section, of a rocking bar having a curved edge itting within said recess, the

sides of said bar being beveled and merging into a thin edge provided with a series of f teeth, and means for rocking said bar to adjust it to an operative or inoperative position, substantially as described.

7. In a scoring or perforating device for printing presses, a rocking bar having an edge to engage the `paper and, a twisted. or spirally formed portion, and means engaging said spirally formed portion for rocking said b ar.

8. The combination, With a base, 01.v a l 

